STAX is back with a new take on one of its most iconic headphone designs. The new SR-007S, priced at $2,200 and available starting June 30, 2025, updates the long-running SR-007 series with a range of subtle but meaningful changes. If you’re already into high-end headphone setups—especially the electrostatic kind—you’ll probably recognize the design right away. But under the surface, there’s a lot that’s been reworked.

First, a quick refresher: electrostatic headphones aren’t your average pair of cans. Instead of using magnets and voice coils like most headphones do, they rely on a super-thin diaphragm suspended between two metal plates. These plates carry an electric charge that moves the diaphragm back and forth to create sound. The upside? Very fast, accurate sound with minimal distortion. The catch? You can’t just plug them into a headphone jack—they require a special amplifier (often called an energizer) to function, and those amps aren’t exactly cheap.

At a glance, the SR-007S looks almost identical to previous models like the SR-007A. That’s intentional—STAX has kept the signature circular earcups and open-back design intact. But inside, things have been updated. The big change is in the diaphragm and electrode structure. 

The vent holes in the metal plates are now about 20% smaller, which helps control airflow and improve how the sound behaves. STAX says this helps bring out more clarity and detail, while still keeping that rich, full-bodied sound the SR-007 series is known for.

A lot of this new internal design draws inspiration from STAX’s current flagship, the SR-X9000, so even though the 007S isn’t at the very top of the lineup, it benefits from some of the same engineering.

To improve stability and cut down on unwanted vibrations, STAX has added what it calls an Anti-Resonance Structure (ARS). This is basically a stainless steel arc built into the frame of the headphone, and it helps keep things rigid and controlled. There’s also a new hinge system to help the headphones better fit a variety of head shapes, and a rubberized headband mount to keep the fit snug but comfortable, without needing manual adjustments.

Comfort has always been a big part of the 007 line, and the SR-007S continues that with upgraded earpads. The parts that touch your skin are made from real sheepskin, while the rest uses synthetic leather. This combination is meant to be both soft and functional, helping absorb unwanted reflections and improving how the sound reaches your ears. The earpads also rotate, which helps with fit and positioning, especially during longer listening sessions.

Another change many will appreciate: the SR-007S now has a detachable cable. This makes it easier to replace down the line or swap out for an upgraded cable if you want to experiment. The stock cable is 2.5 meters long and made with HiFC wire—a type of copper alloy that includes small amounts of titanium and sulfur. This material was chosen for its durability, flexibility, and ability to maintain signal integrity.

Key Specs:

• Frequency response: 6Hz to 41kHz
• Impedance: 145 kΩ
• Sensitivity: 101 dB
• Bias voltage: 580V DC
• Weight: ~430–450 grams (without the cable)

As always with electrostatics, you’ll need a proper STAX driver unit to power these. STAX recommends using something like their SRM-T800 for best performance and warranty coverage. This isn’t a plug-and-play setup—it’s more of an investment into a full system.

The STAX SR-007S will officially go on sale June 30, 2025, through STAX’s authorized dealers and website. At $2,200, it’s not the kind of gear most people pick up on a whim, but for listeners who are already deep into the world of electrostatic headphones—or curious about making the jump—it’s a continuation of a well-known series with smart, modern upgrades.

The overall vibe here isn’t revolution, but refinement. STAX has taken a classic design and updated it with better materials, more comfort, and quieter operation, without changing what made the original so recognizable in the first place.